
Juniper Networks Technical Assistance Center
(JTAC).....................................................................................151
L
laser
beam warning...............................................................258
Class 1 laser warning...................................................257
safety guidelines..........................................................256
LEDs
AC power supplies.........................................................44
alarm (red and yellow on craft interface)
description................................................................37
Class 1 LED warning.....................................................257
DC power supplies........................................................46
DPC...............................................................................12, 39
fan................................................................................40, 49
FPC......................................................................................39
host subsystem.......................................................26, 38
MIC........................................................................................16
MPC...............................................................................15, 39
on components..............................................................151
on craft interface..........................................................150
power supplies................................................................39
Routing Engine.........................................................35, 36
safety warnings.............................................................257
SCB.....................................................................................40
lightning activity warning..................................................262
link loss, calculating............................................................309
lithium battery compliance...............................................279
lugs for DC power and grounding cables....................296
lugs for DC power cables..................................................304
M
maintaining
DPC...........................................................................130, 138
DPC cable........................................................................138
FPC.....................................................................................132
host subsystem.............................................................128
MIC.....................................................................................138
MPC...................................................................................138
PIC......................................................................................138
PIC cable..........................................................................138
maintenance guidelines
air filter..............................................................................124
cable
PIC.............................................................................134
DPC....................................................................................130
fan tray..............................................................................124
MIC......................................................................................137
MPCs.................................................................................135
PIC......................................................................................134
warnings.........................................................................259
management
port See Ethernet port
manuals
comments on................................................................xxiii
MIC cables
connecting......................................................................100
replacing..........................................................................222
MICs
cable, installation instructions...............................224
connecting......................................................................100
description.........................................................................15
dual-wide, installing....................................................212
LEDs.....................................................................................16
maintaining............................................................137, 138
replacing.........................................................................208
serial number................................................................323
status, checking....................................................137, 138
midplane.......................................................................................9
description..........................................................................9
functions..............................................................................9
midplane energy hazard warning..................................266
modal dispersion in fiber-optic cable...........................307
mode loss, higher-order.....................................................307
Modular Interface Cards See MICs
MPC cables
connecting......................................................................100
replacing..........................................................................222
MPCs
cable, installation instructions...............................224
components......................................................................14
connecting......................................................................100
description.........................................................................13
LEDs..............................................................................15, 39
maintaining............................................................135, 138
replacing.........................................................................203
serial number.................................................................322
status, checking..........................................135, 138, 156
troubleshooting............................................................156
multimode fiber-optic cable See cables, fiber-optic
MX SCB
components.....................................................................27
description........................................................................26
MX SCBE
description........................................................................29
MX SCBes
components....................................................................30
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MX480 3D Universal Edge Router Hardware Guide
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